121bfcb759e561bca3f63777498646c80d030a92dac5a27c7c9cc8f5581e672e

Analysis

max time kernel
148s
max time network
151s
platform
windows11-21h2_x64
resource
win11-20241007-en
resource tags

arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
submitted
04/12/2024, 15:48

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General

Target

lbtkksefa.exe
Size

29KB
MD5

3ace4cb9af0f0a2788212b3ec9dd4a4e
SHA1

2914bd74b5553f5f4dbd5f7b23bc00d04a2c77cb
SHA256

121bfcb759e561bca3f63777498646c80d030a92dac5a27c7c9cc8f5581e672e
SHA512

76ecc354b1fb5bf93f18bbe9f85401ef40e0826f7eea73a0cb5afda5d69ec384a459c07b6cc2386176888978d2dbb9bac9360e249114c59799de0984bbba5c56
SSDEEP

384:EhEy+hzv91UqVY8+JppEhKe+Ej7sI4GSFdX9NAb/QX22r5A/w/o0el7xI:IEy+hT91UqVY8+XpEh6CMs7gx/o17

Score

7^/10

discovery

Malware Config

Signatures

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\service.exe	lbtkksefa.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\service.exe	service.exe

Executes dropped EXE 1 IoCs

pid	Process
4916	service.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	service.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	lbtkksefa.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
1468	schtasks.exe
1028	schtasks.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2372 wrote to memory of 3276	2372	lbtkksefa.exe	78
PID 2372 wrote to memory of 3276	2372	lbtkksefa.exe	78
PID 2372 wrote to memory of 3276	2372	lbtkksefa.exe	78
PID 3276 wrote to memory of 1468	3276	cmd.exe	80
PID 3276 wrote to memory of 1468	3276	cmd.exe	80
PID 3276 wrote to memory of 1468	3276	cmd.exe	80
PID 4916 wrote to memory of 1928	4916	service.exe	82
PID 4916 wrote to memory of 1928	4916	service.exe	82
PID 4916 wrote to memory of 1928	4916	service.exe	82
PID 1928 wrote to memory of 1028	1928	cmd.exe	84
PID 1928 wrote to memory of 1028	1928	cmd.exe	84
PID 1928 wrote to memory of 1028	1928	cmd.exe	84

C:\Users\Admin\AppData\Local\Temp\lbtkksefa.exe
"C:\Users\Admin\AppData\Local\Temp\lbtkksefa.exe"
1⤵
- Drops startup file
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2372
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C schtasks /create /tn WinApp /tr %APPDATA%\service.exe /st 00:00 /du 9999:59 /sc daily /ri 1 /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3276
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /tn WinApp /tr C:\Users\Admin\AppData\Roaming\service.exe /st 00:00 /du 9999:59 /sc daily /ri 1 /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1468

C:\Users\Admin\AppData\Roaming\service.exe
C:\Users\Admin\AppData\Roaming\service.exe
1⤵
- Drops startup file
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4916
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C schtasks /create /tn WinApp /tr %APPDATA%\service.exe /st 00:00 /du 9999:59 /sc daily /ri 1 /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1928
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /tn WinApp /tr C:\Users\Admin\AppData\Roaming\service.exe /st 00:00 /du 9999:59 /sc daily /ri 1 /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1028

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\service.exe

Filesize
29KB

MD5
3ace4cb9af0f0a2788212b3ec9dd4a4e

SHA1
2914bd74b5553f5f4dbd5f7b23bc00d04a2c77cb

SHA256
121bfcb759e561bca3f63777498646c80d030a92dac5a27c7c9cc8f5581e672e

SHA512
76ecc354b1fb5bf93f18bbe9f85401ef40e0826f7eea73a0cb5afda5d69ec384a459c07b6cc2386176888978d2dbb9bac9360e249114c59799de0984bbba5c56

Download Submit
memory/2372-2-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/4916-12-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads